Top Disc

The top disc is the uppermost conical disc in a disc stack centrifuge assembly, typically made of high-strength stainless steel or specialized alloys. It functions as the primary separation surface where centrifugal forces cause denser particles or immiscible liquids to migrate outward while lighter phases move inward. This component features precisely engineered channels, distribution holes, and surface treatments to optimize flow patterns, prevent clogging, and withstand extreme rotational speeds (typically 5,000-15,000 RPM) and corrosive environments.

The top disc operates on centrifugal sedimentation principles. When the centrifuge rotates at high speed, the disc stack creates multiple parallel separation zones. The top disc receives the feed mixture through central distribution holes, then uses centrifugal force (typically 5,000-15,000×g) to separate components based on density differences. Heavier phases migrate to the disc periphery for collection, while lighter phases flow inward toward the centripetal pump. The disc's conical design (typically 35-45° angle) maximizes separation surface area while maintaining laminar flow conditions.